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Related Experiment Video

Updated: Jul 9, 2026

Light/dark Transition Test for Mice
10:35

Light/dark Transition Test for Mice

Published on: November 13, 2006

Short light-dark cycles affect sleep in mice.

Tom Deboer1, Guido Ruijgrok, Johanna H Meijer

  • 1Laboratory for Neurophysiology, Department of Molecular Cell Biology, Leiden University Medical Center, Leiden, The Netherlands. tom.de_boer@lumc.nl

The European Journal of Neuroscience
|December 7, 2007
PubMed
Summary

Environmental light significantly impacts mouse sleep patterns. Short light-dark cycles, particularly 10-30 minutes, increase rapid eye movement (REM) sleep duration after dark onset, demonstrating light

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Area of Science:

  • Neuroscience
  • Chronobiology
  • Sleep Research

Background:

  • Environmental light profoundly influences human and animal physiology, including sleep.
  • Previous research indicated short light-dark cycles affect sleep in rats, with REM sleep changes observed.
  • The impact of light on mouse sleep, particularly under rapid cycling conditions, remained less understood.

Purpose of the Study:

  • To investigate the effects of light on sleep patterns in mice.
  • To determine if short light-dark cycles influence sleep architecture, specifically REM sleep, in mice.
  • To analyze the temporal dynamics of sleep responses to rapid light-dark transitions.

Main Methods:

  • Utilized electroencephalogram (EEG) and electromyogram (EMG) recordings in nine adult male C57BL/6 mice.

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Noninvasive, High-throughput Determination of Sleep Duration in Rodents
07:33

Noninvasive, High-throughput Determination of Sleep Duration in Rodents

Published on: April 18, 2018

Related Experiment Videos

Last Updated: Jul 9, 2026

Light/dark Transition Test for Mice
10:35

Light/dark Transition Test for Mice

Published on: November 13, 2006

Noninvasive, High-throughput Determination of Sleep Duration in Rodents
07:33

Noninvasive, High-throughput Determination of Sleep Duration in Rodents

Published on: April 18, 2018

  • Subjected mice to baseline 12:12h light-dark (LD) cycles, continuous darkness (DD), and various short LD cycles (2 min to 2 h).
  • Analyzed NREM and REM sleep distribution and duration across different light-dark cycle durations.

    • Main Results:

    • Non-REM (NREM) sleep was uniformly distributed across light and dark phases in short LD cycles.
    • Rapid eye movement (REM) sleep significantly increased during the dark intervals of short LD cycles (10-30 min).
    • REM sleep increase was maximal within the first two minutes of dark onset, with episode duration being the primary driver.

    Conclusions:

    • Photic stimulation demonstrably affects sleep regulation in mice.
    • Pigmented animals, like mice, exhibit REM sleep induction following dark onset.
    • Light plays a significant role in the regulation of sleep, even under rapidly changing environmental conditions.